U.S. patent application number 11/267481 was filed with the patent office on 2007-05-10 for framework for enabling traction to be applied to a patient.
Invention is credited to Kenneth P. Davis, David L. Mollon.
Application Number | 20070106193 11/267481 |
Document ID | / |
Family ID | 38004753 |
Filed Date | 2007-05-10 |
United States Patent
Application |
20070106193 |
Kind Code |
A1 |
Davis; Kenneth P. ; et
al. |
May 10, 2007 |
Framework for enabling traction to be applied to a patient
Abstract
A framework for enabling traction to be applied to a patient
comprises a main elongate structure (12) supporting a pulley (15),
and at least one leg structure (10) foldably connected to the main
structure. Preferably, the main structure includes a foldable
second leg portion (123), and a pulley support section (122) of the
main structure is slidably located, in order to permit adjustment
of the location of the pulley. An further support member (20) may
be provided, removably attachable to the leg structure (10), for
supporting bed covers.
Inventors: |
Davis; Kenneth P.; (High
Wycombe, GB) ; Mollon; David L.; (Crowthorne,
GB) |
Correspondence
Address: |
RENNER, KENNER, GREIVE, BOBAK, TAYLOR & WEBER
FIRST NATIONAL TOWER FOURTH FLOOR
106 S. MAIN STREET
AKRON
OH
44308
US
|
Family ID: |
38004753 |
Appl. No.: |
11/267481 |
Filed: |
November 5, 2005 |
Current U.S.
Class: |
602/32 |
Current CPC
Class: |
A61F 5/04 20130101 |
Class at
Publication: |
602/032 |
International
Class: |
A61F 5/00 20060101
A61F005/00 |
Claims
1. A framework for enabling traction to be applied to a patient,
the framework comprising a main elongate structure (12) supporting
a pulley (15), and at least one leg structure (10) foldably
connected to the main structure (12).
2. The framework as claimed in claim 1, wherein the main elongate
structure (12) includes a foldable second leg portion (123).
3. The framework as claimed in claim 2, wherein the second leg
portion (123) is foldably connected to a middle section (121) of
the main structure (12) by means of at least one lockable
hinge.
4. The framework as claimed in claim 3, wherein the lockable hinge
comprises a hinge portion (16a) and a substantially tubular locking
member (16b) which is slidable over the hinge portion (16a) to lock
the hinge in position.
5. The framework as claimed in claim 1, wherein the main structure
(12) comprises a pulley support section (122) which supports the
pulley (15), the pulley support section (122) being slidably
connected to a middle section (121) of the main structure (12) so
as to permit the distance between the pulley and the middle section
(121) to be adjusted.
6. The framework as claimed in claim 5, wherein the pulley support
section (122) is fixable in any one of a number of different
discrete extended positions by means of a locking adjustment
arrangement.
7. The framework as claimed in claim 6, wherein the locking
adjustment arrangement comprises a plunger resiliently biased into
engagement with any of a series of indentations provided in spaced
apart arrangement on the pulley support section (122), to fix the
pulley support section (122) in any of a plurality of predetermined
positions.
8. The framework as claimed in claim 1, wherein the pulley (15) is
elongate in an axial direction so as to provide a plurality of
distinct pulley surfaces (15a, 15b, 15c), to allow traction to be
applied along varying axes of the framework.
9. The framework as claimed in claim 1, wherein the main structure
(12) and the leg structure (10) are foldably connected by means of
at least one adjustable locking linkage (13), such that the leg
structure (10) can be moved and locked into at least two different
predetermined positions relative to the main structure (12).
10. The framework as claimed in claim 9, wherein the locking
linkage (13) includes a boss (23), a locking screw (24) arranged to
pass through a hole in the boss and operable in association with a
locking nut (25) to hold the main structure (12) and leg structure
(10) against one another, and wherein the boss (23) is shaped to
provide at least two scalloped locating grooves (1, 2) for locating
a portion of the main structure (12) or leg structure (10) relative
to the boss (23) in order to define the predetermined relative
positions.
11. The framework as claimed in claim 1, wherein the leg structure
(10) further comprises a removably attachable support member (20)
for supporting bed covers, in use.
12. The framework as claimed in claim 1, the framework being formed
from generally tubular members.
Description
[0001] The present invention relates to a framework which permits
traction to be applied to a patient.
[0002] Such frameworks are already well known and in particular a
framework known as a Braun frame has been particularly popular.
[0003] The problem with the Braun frame is that it is a heavy fixed
framework which mitigates against it being moved easily from
patient to patient.
[0004] The present invention provides a collapsible framework which
will carry out the same functions as the known Braun frame but in a
more convenient fashion.
[0005] Preferably, the framework is not only collapsible but also
adjustable so as to enable it to be utilised in different locations
and with different sizes of patients.
[0006] In order that the present invention be more readily
understood, an embodiment thereof will now be described by way of
example only with reference to the accompanying drawings, in
which:
[0007] FIG. 1 shows an isometric view of a frame according to the
present invention in an upright assembled position;
[0008] FIG. 2 shows an isometric review of the frame shown in FIG.
1 but in a folded flat condition;
[0009] FIG. 3 shows a detail of the locking mechanism of the frame
shown in FIG. 1; and
[0010] FIG. 4(a) shows a detail of the attachment of a bed cover
support member to the stand member, and FIG. 4(b) shows the same
part but without the bed cover support attached.
[0011] The frame for permitting traction to be applied to a patient
according to the present invention comprises a plurality of
interlinked members. In this case there are basically two
interlinked members so as to permit folding with one of the members
being further adjustable to provide a considerable degree of
adjustment as well as enabling the frame to be folded in a very
compact fashion. The two members are a main stand member 10 which
is of generally flattened U-shape with the free ends of the legs 11
of the member 10 being connected to a main elongate member 12 via
an adjustable locking linkages 13 whereby the member 10 may be
folded with respect to the member 12 to assume the position shown
in FIG. 2.
[0012] The member 12 in this embodiment is made up of three
sections, namely a middle section 121, a pulley support section 122
and a bed engaging section 123.
[0013] The middle section 121 in this embodiment is provided with
the linkages 13 connecting the two members 10 and 12 together. One
end 121a of the middle section 121 is connected to the pulley
support section 122 which is generally U-shaped with a pulley 15
rotatably mounted in the bight 14 of the section 122.
[0014] The U-shaped section 122 is slidably received within tubular
members which form the section 121 and can be fixed any one of a
number of different discrete extended positions by means of a
locking adjustment arrangement cooperating with indentations spaced
apart along the length of the legs of the member 122. The
adjustment arrangement is preferably a simple spring loaded plunger
which is biased into engagement with an indentation to fix the
section 122 in position. Any other simple, easily operable system
could be used.
[0015] The other ends 121b of the middle section 121 are provided
with hinge arrangements 16 which connect to the bed engaging
section 123.
[0016] As better shown in FIG. 2, the hinge arrangements 16
consists of a hinge part 16a and a locking tubular member 16b which
can be moved from the position shown in FIG. 2 to the position
shown in FIG. 1 in order to completely cover the hinge portion 16a
and thus lock the bed engaging section 123 into position as shown
in FIG. 1. In order to fold the section 123 to the position shown
in FIG. 2 all that is necessary is for the tubular member 16b to be
slipped off the hinge portion 16a whereupon the section 123 can be
folded against the tubular members forming the middle section
121.
[0017] It will be noted that the tubular members forming the middle
section 121 are slightly bent adjacent their ends 121b so as to
permit the frame, when assembled as shown in FIG. 1 to be supported
on a flattened sections of a U-shaped members 18 which constitutes
the bed engaging section 123 in this embodiment and the member
10.
[0018] If necessary, a further U-shaped member 20 can be added
which may fit into the free ends 11 of the flattened U-shaped
member 10. The member 20 can be used to support bed covers and aid
comfort. FIG. 4(a) shows in more detail the attachment of the
U-shaped bed cover or sheet support member 20 to the stand member
10, and also shows a dust cap 26 which is preferably provided, and
may be retained as shown by a portion surrounding the leg 11 of the
stand member 10. In the configuration of FIG. 4(a), the dust cap is
not used, since the tubular legs 11 of the member 10 are occupied
by the member 20. However, when the bed cover support member 20 is
not fitted, the dust cap 26 can be placed over the open end of each
leg 11, to prevent dust or other debris from entering the tubular
frame. It will be appreciated that a dust cap is preferably
provided on each side of the frame.
[0019] Turning now to FIG. 3, this shows in more detail the locking
arrangement between the flattened U-shaped member 10 and the main
elongate member 12. This locking arrangement comprises a main part
21 which is fixed to a respective tubular member 12 and has a
depending portion 22, one major surface of which is provided with a
boss 23 through the centre of which passes a locking screw 24. Each
free end of the legs 11 has a diametrically opposite pair of holes
in register with the hole through the boss 23 so that the locking
screw projects from the boss 23 through the holes in the walls of
legs 11 so that a locking nut or handwheel 25 can be provided on
the end of the locking screw 24. Consequently, simply by slackening
the locking nuts on the locking screws 24, the U-shaped member 10
can be folded against the member 12 to adopt the position shown in
FIG. 2 and the member 20, if provided, adopts the position shown in
FIG. 2 also. Preferably, the locking nut or handwheel is retained
in position so that it cannot be fully removed, but can only be
tightened or loosened.
[0020] It is also to be noted that the boss 23 is shaped to have
two pairs of diametrically opposed scallops 1, 2 so that the member
10 and main member 12 can only adopt one of two specific
orientations. This not only ensures accurate positioning of the
respective members but also ensures that the integrity of the
framework is assured.
[0021] It is also to be noted that the pulley 15 (FIG. 2) is
elongate in an axial direction so as to provide three quite
distinct pulley surfaces 15a, 15b and 15c. This permits traction to
be applied down the centre line of the frame by using the pulley
surface 15b or slightly off axis by using the pulley surface 15a or
15c.
[0022] It will be appreciated that the above embodiment is fully
adjustable to permit different sizes of patient. Further, because
it is foldable it can be moved readily from patient to patient, and
requires little storage space when not in use.
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